Convert Icing Sugar from Pounds to Cup (US)

How many US cups is 1 pound of icing sugar?

1 pound of icing sugar (Powdered Sugar) is 3.78 US cups. 2 pounds of icing sugar is 7.56 US cups. 1/2 pound of icing sugar is 1.89 US cups. 1/4 pound (0.25 pound) of icing sugar is 0.94 US cups. Use the converter below for any amount.

Icing sugar is a finely milled white sugar with a light, silky texture. One metric cup weighs approximately 125 grams (4.41 oz), noticeably lighter than granulated sugar because the fine particles don't pack as tightly. It's used in buttercreams, glazes, frostings, and as a dusting over cakes and pastries.

Icing sugar is so fine and airy that the amount you get in a cup can vary significantly depending on how it's scooped — measuring by weight gives far more consistent results. This page lets you convert icing sugar between grams, cups, tablespoons, and more so your recipes turn out reliably every time.

Also known as

  • Powdered Sugar
  • Confectioners' Sugar

Granulated sugar is the coarse, crystalline form that icing sugar is milled from. It is heavier by cup (200 g vs 125 g) and creams into butter for cakes, whereas icing sugar suits frostings and dusting, so the two are not a straight 1:1 swap. See our Sugar converter.

Raw sugar has large, coarse crystals with a faint molasses taste, far removed from the fine powder of icing sugar. It packs much heavier (200 g vs 125 g per cup), so the two are not a straight swap. See our Raw Sugar converter.

Out of icing sugar? See icing sugar substitutes →

No scale? The tool below gives a good estimate, but for exact bakes a digital kitchen scale removes the guesswork.

Icing Sugar Measurement Converter

Enter a value and pick your units.

Result

0 Cup (US)

Common Icing Sugar Conversions

Here are the most common icing sugar conversions from pounds to cups (US).

PoundsCups (US)
1 lb3.78 cups (US)
2 lb7.56 cups (US)
4 lb15.12 cups (US)
6 lb22.68 cups (US)

Icing Sugar Conversion Chart

The conversion chart below gives a quick reference for converting icing sugar from Pounds to Cup (US) and other measurements.

lbcup(US)cupgramsounceskgtbsptsp
1 lb3.78 cup (US)3.63 cup453.59 g16 oz0.45 kg60.48 tbsp181.44 tsp
2 lb7.56 cup (US)7.26 cup907.18 g32.01 oz0.91 kg120.96 tbsp362.87 tsp
4 lb15.12 cup (US)14.51 cup1814.37 g64.01 oz1.81 kg241.92 tbsp725.75 tsp
6 lb22.68 cup (US)21.77 cup2721.55 g96.02 oz2.72 kg362.87 tbsp1088.62 tsp

Frequently Asked Questions

What is 1 pound of icing sugar in US cups?
1 pound of icing sugar is 3.78 US cups. The ratio is fixed, so 2 pounds of icing sugar is 7.56 US cups and 0.5 pounds is 1.89 US cups. Use the converter above for any quantity, or check the conversion chart on this page for the most common amounts at a glance. Open the icing sugar converter
How many US cups is 1.5 pounds of icing sugar?
1.5 pounds of icing sugar is 5.67 US cups. The ratio is fixed, so 1 pound of icing sugar is 3.78 US cups and 2 pounds is 7.56 US cups. Type any other amount into the converter above for the exact figure, or use the chart below for the common ones.
What is 2 pounds of icing sugar in US cups?
2 pounds of icing sugar is 7.56 US cups. Conversions scale in a straight line, so halving or doubling a recipe keeps the same ratio. 1 pound of icing sugar is 3.78 US cups, and you can multiply or divide that figure to match whatever your recipe needs. Enter any amount in the converter above for an exact US cups reading.
How many pounds of icing sugar is 3.78 US cups?
3.78 US cups of icing sugar is 1 pound. The conversion works the same in reverse, so you can switch between US cups and pounds without changing the result. This helps when a recipe lists pounds but you would rather weigh or measure in US cups. The converter above and the chart below cover both directions for any amount.
How many US cups is 1 pound of Powdered Sugar?
Powdered Sugar is another name for icing sugar, so 1 pound of Powdered Sugar is 3.78 US cups, exactly the same as icing sugar. The figure does not change with the name: 2 pounds is 7.56 US cups and 0.5 pounds is 1.89 US cups. Use the converter above for any quantity, or read the conversion chart on this page for the most common amounts.
Are icing sugar and Powdered Sugar the same thing?
Yes. Powdered Sugar is another name for icing sugar, so they are the same ingredient and convert identically. 1 pound of icing sugar is 3.78 US cups under either name, and 2 pounds is 7.56 US cups. Recipes use the two names interchangeably, so you can follow either one without changing quantities or weighing any differently.
What is 1/2 lb icing sugar in US cups?
1/2 pound of icing sugar is 1.89 US cups. The ratio is fixed, so 1 pound of icing sugar is 3.78 US cups and 2 pounds is 7.56 US cups. Half measures come up often when scaling a recipe down, and the figure divides cleanly. Use the converter above for any other amount, or the chart below for the common ones.
What is 1/4 lb icing sugar in US cups?
1/4 pound (0.25 pound) of icing sugar is 0.94 US cups. The ratio is fixed, so 1 pound of icing sugar is 3.78 US cups and 2 pounds is 7.56 US cups. Quarter amounts often come up when scaling a recipe down step by step, and the figure divides cleanly. Use the converter above for any other quantity, or the chart below for the most common amounts.

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